Quick self-locking connector

Abstract

The quick self-locking connector comprises a quick connector female head and a quick connector male head, the quick connector female head comprises a female head body, the female head body is provided with a connector end and a socket end which are coaxial, a sliding block is arranged in the middle of the pipe wall of the socket end, and the outer ring of the socket end is sleeved with a rotating ring; the rotating ring is in elastic axial sliding connection with the socket end, and when the rotating ring slides, the sliding block can be pushed to move towards the interior of the socket end in the radial direction of the socket end, and the sliding block protrudes out of the inner wall of the socket end. The quick connector is simple in structure and convenient to operate, the annular clamping groove is formed in the quick connector male head, the rotating ring, the sliding block, the screw and the dustproof sleeve are arranged on the quick connector female head, the sliding block is clamped into the annular clamping groove, the sliding block is blocked by the baffle ring on the rotating ring, and the screw and the dustproof sleeve block the two ends of the rotating ring, so that the sliding block cannot move; therefore, self-locking coupling of the quick connector male head and the quick connector female head is achieved, and loosening is effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, in particular to a quick self-locking joint. Background Art

[0002] In the industrial field, the connection of fluid pipelines is a crucial link. It is not only related to the safe transmission of fluids, but also directly affects the stability and reliability of the entire system. As a key component for connecting fluid pipelines, the design and performance of pipe joints directly affect the safety and sealing of fluid pipeline systems. Traditional pipe joint connection methods usually require the use of threaded connections, welding or flange connections. Although these connection methods can meet the use requirements to a certain extent, they have certain limitations in connection speed, ease of operation and safety. First of all, during the installation and disassembly process of traditional pipe joint connection methods, professional tools such as wrenches and screwdrivers are often required, which not only increases the difficulty of operation, but also reduces work efficiency. Secondly, during the connection process, the traditional connection method is prone to loosening of the connection parts due to improper operation or external vibration, thereby affecting the sealing and safety of the system.

[0003] In order to overcome the shortcomings of traditional pipe joints, various quick connectors have gradually appeared on the market. These quick connectors usually adopt a snap-on or push-pull connection method, which can quickly complete the connection and disassembly of the pipeline without using tools. However, the existing quick connectors still have some defects. For example, some quick connectors are often complex in structure, with many parts and components, and are not easy to operate, which not only increases the manufacturing cost, but also makes maintenance and replacement difficult. Some quick connectors cannot be effectively locked during the connection process and are easy to loosen when subjected to external forces. In addition, some quick connectors have poor sealing performance and are prone to fluid leakage. These problems limit their promotion in a wider range of application scenarios. Summary of the invention

[0004] The object of the present invention is to provide a quick self-locking connector which has a simple structure, is easy to operate, has good sealing performance and can effectively prevent loosening, so as to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A quick self-locking joint, comprising a quick joint female head and a quick joint male head, the quick joint female head comprising a female head body, the female head body being provided with a coaxial joint end and a socket end, a slider being provided at the middle of the tube wall of the socket end, a rotating ring being sleeved on the outer ring of the socket end, the rotating ring being elastically axially slidably connected to the socket end, the rotating ring being able to push the slider to move radially toward the inside of the socket end along the socket end when sliding and making the slider protrude from the inner wall of the socket end, a screw for an axially limiting rotating ring being fixedly provided at one end of the socket end close to the joint end, a dust cover being fixedly provided at the other end of the socket end, a sealing ring being installed at the inner bottom of the socket end, an annular groove being provided on the quick joint male head, and the quick joint male head being sealed with the female head body through the sealing ring after being inserted into the socket end and the slider being stuck in the annular groove.

[0006] Furthermore, a dust cover groove is provided at the outward end of the bell end, a boss is radially symmetrically fixedly provided at one end of the bell end close to the joint end, a screw hole is provided on the boss, and a tapered hole is radially provided in the middle of the pipe wall of the bell end.

[0007] Furthermore, the slider is conical and matches the tapered hole, and the tapered head of the slider is an arc surface.

[0008] Furthermore, a retaining ring is fixedly arranged in the middle of the inner wall of the rotating ring, one end of the retaining ring is connected to the inner wall of the rotating ring through a vertical surface, and the other end is connected to the inner wall of the rotating ring through a conical surface. A spring is arranged between the socket end and the rotating ring, one end of the spring is attached to the boss, and the other end is attached to the vertical surface.

[0009] Furthermore, a symmetrical open waist-shaped groove is formed at one end of the rotating ring close to the screw, and the width of the open waist-shaped groove matches the diameter of the screw.

[0010] Furthermore, one end of the male quick connector is a cone end, and the other end is an internal thread end. An annular groove is provided in the middle of the male quick connector, and the cross section of the annular groove is an arc shape.

[0011] Furthermore, the sealing ring is in a cover shape, a sealing lip inclined inwardly is arranged on the top of the sealing ring, a fluid cavity is formed between the sealing lip and the sealing ring body, and a serrated buffer layer is arranged on the bottom of the sealing ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has a simple structure and is easy to operate. An annular groove is arranged on the male head of the quick connector, and a rotating ring, a slider, a screw and a dust cover are arranged on the female head of the quick connector. The slider is inserted into the annular groove, and the retaining ring on the rotating ring is used to block the slider, and the screws and the dust cover block the two ends of the rotating ring, so that the slider cannot move, thereby realizing the self-locking coupling between the male head of the quick connector and the female head of the quick connector, and effectively preventing loosening.

[0013] 2. The present invention is provided with a sealing ring with a sealing lip and a buffer layer. A fluid cavity is formed between the sealing lip and the sealing ring body. When sealing, the fluid medium enters the fluid cavity and forces the sealing lip to be stretched outward and tightly against the sealing surface, thereby realizing a self-tightening seal. The higher the system pressure, the better the sealing effect. The buffer layer can effectively alleviate the system pressure shock and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the appearance diagram of the present invention; Figure 2 This is a cross-sectional view of the female quick connector; Figure 3 This is a cross-sectional view of the female head body; Figure 4 It is a cross-sectional view of the rotating ring; Figure 5 This is a cross-sectional view of the male quick connector; Figure 6 It is a cross-sectional view of the coupling state of the present invention; In the figure: 1-quick connector female, 2-quick connector male, 201-cone head end, 202-internal thread end, 203-annular groove, 3-female body, 301-connector end, 302-socket end, 303-boss, 304-screw hole, 305-cone hole, 306-dust cover groove, 4-rotating ring, 401-retaining ring, 402-vertical surface, 403-cone surface, 404-open waist groove, 5-spring, 6-slider, 7-sealing ring, 701-sealing lip, 702-fluid cavity, 703-buffer layer, 8-dust cover, 9-screw. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] See also Figure 1-Figure 6 , an embodiment provided by the present invention: A quick self-locking joint, comprising a quick joint female head 1 and a quick joint male head 2, wherein the quick joint female head 1 comprises a female head body 3, wherein the female head body 3 is provided with a coaxial joint end 301 and a socket end 302, wherein the joint end 301 is used to connect with other pipes, wherein a slider 6 is provided at the middle of the pipe wall of the socket end 302, wherein a rotating ring 4 is sleeved on the outer ring of the socket end 302, wherein the rotating ring 4 is elastically axially slidably connected with the socket end 302, wherein when the rotating ring 4 slides, the slider 6 can be pushed to move radially toward the inside of the socket end 302 along the socket end 302 and the slider 6 protrudes from the socket end 30 2 inner wall, a screw 9 for axially limiting the rotating ring 4 is fixedly arranged at one end of the socket end 302 close to the joint end 301, and a dust cover 8 is fixedly arranged at the other end of the socket end 302. In addition to having a dustproof effect, the dust cover 8 also has the function of axially limiting the rotating ring 4 to prevent the rotating ring 4 from slipping out of the socket end 302. A sealing ring 7 is installed at the bottom of the socket end 302. The quick connector male head 2 is provided with an annular groove 203. After the quick connector male head 2 is inserted into the socket end 302, it is sealed with the female head body 3 through the sealing ring 7 and the slider 6 is stuck in the annular groove 203.

[0017] Among them, a dust cover groove 306 is opened at the outward end of the bell end 302 for installing the dust cover 8, a boss 303 is radially symmetrically fixedly arranged at one end of the bell end 302 close to the joint end 301, and a screw hole 304 is opened on the boss 303 for installing the screw 9, and a tapered hole 305 is radially opened in the middle of the pipe wall of the bell end 302 for placing the slider 6.

[0018] Among them, the slider 6 is conical and matches the tapered hole 305, so that when the slider 6 is placed in the tapered hole 305, it will not fall from the tapered hole 305 into the inner cavity of the socket end 302. The tapered head of the slider 6 is an arc surface, so that when the tapered head end 201 of the quick connector male head 2 presses against the slider 6, a radial thrust is generated to push the slider 6 to move outward and reduce friction.

[0019] Among them, a retaining ring 401 is fixedly arranged in the middle of the inner wall of the rotating ring 4, one end of the retaining ring 401 is connected to the inner wall of the rotating ring 4 through a vertical surface 402, and the other end is connected to the inner wall of the rotating ring 4 through a conical surface 403, and a spring 5 is arranged between the socket end 302 and the rotating ring 4, one end of the spring 5 is attached to the boss 303, and the other end is attached to the vertical surface 402.

[0020] Among them, a symmetrical open waist-shaped groove 404 is opened at one end of the rotating ring 4 close to the screw 9, and the width of the open waist-shaped groove 404 matches the diameter of the screw 9. By aligning the open waist-shaped groove 404 with the screw 9, the axial movement of the rotating ring 4 can be achieved. By rotating the rotating ring 4 so that the screw 9 is offset from the open waist-shaped groove 404 and blocks the rotating ring 4, the axial movement of the rotating ring 4 can be limited.

[0021] Among them, one end of the quick connector male head 2 is a cone head end 201, and the other end is an internal thread end 202. After the cone head end 201 is inserted into the socket end 302, it is convenient to push the slider 6 away from the inner cavity of the socket end 302, so that the quick connector male head 2 can be smoothly inserted to the bottom of the socket end 302 and contact the sealing ring 7. The internal thread end 202 is used to connect with other pipes. An annular groove 203 is opened in the middle of the quick connector male head 2. The cross-section of the annular groove 203 is an arc shape, which is convenient for smoothly lifting the slider 6 when the quick connector male head 2 is pulled out of the quick connector female head 1.

[0022] Among them, the sealing ring 7 is in the shape of a cover, and a sealing lip 701 inclined inward is arranged on the top of the sealing ring 7, and a fluid cavity 702 is formed between the sealing lip 701 and the main body of the sealing ring 7. When the quick connector male head 2 is coupled with the quick connector female head 1, the cone head end 201 fits the sealing lip 701, and at the same time, the fluid medium enters the fluid cavity 702 to force the sealing lip 701 to be stretched outward and tightly against the cone head end 201, thereby realizing the sealing between the cone head end 201 and the female head main body 3, which is a self-tightening seal. The higher the system pressure, the better the sealing effect. Moreover, the cone head end 201 and the sealing lip 701 are both conical surfaces. When the sealing lip 701 is under pressure, it can fit more evenly on the sealing surface, thereby improving the stability and reliability of the sealing performance. A serrated buffer layer 703 is arranged at the bottom of the sealing ring 7, which can effectively alleviate the system pressure shock and prolong the working life. At the same time, it also provides a pre-tightening force for the cone head end 201, so that the annular groove 203 presses the slider 6 tightly to prevent the quick connector male head 2 from loosening.

[0023] Working principle of the present invention: When the quick connector female head 1 and the quick connector male head 2 are coupled, first rotate the rotating ring 4 to align the open waist-shaped groove 404 with the screw 9, pull the rotating ring 4 to make the open waist-shaped groove 404 insert the screw 9, and at the same time, the retaining ring 401 leaves the slider 6 to make room for the slider 6 to move, and then insert the quick connector male head 2 into the socket end 302, the cone head end 201 lifts the slider 6 and continues to move forward until it reaches the bottom of the sealing ring 7, at this time the annular groove 203 is located below the slider 6, the slider 6 slides into the annular groove 203 and under the action of the buffer layer 703 The annular groove 203 is supported downward to prevent the quick connector male 2 from retreating and loosening, and the rotating ring 4 is loosened. The rotating ring 4 moves toward the quick connector male 2 under the action of the spring 5 and makes the retaining ring 401 block the slider 6 to prevent the slider 6 from leaving the annular groove 203. At this time, the open waist-shaped groove 404 has slipped away from the screw 9. Then the rotating ring 4 is rotated to make the open waist-shaped groove 404 staggered from the screw 9. The screw 9 blocks the outer end of the rotating ring 4 to limit the axial movement of the rotating ring 4, thereby realizing the coupling and self-locking of the quick connector female 1 and the quick connector male 2. When the quick connector female 1 and the quick connector male 2 are disassembled, the rotating ring 4 is also moved first to make room for the slider 6 to move, and then the quick connector male 2 is pulled out. The slider 6 is lifted during the movement of the annular groove 203, so that the quick connector male 2 can be completely pulled out.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick self-locking connector, comprising a quick connector female head (1) and a quick connector male head (2), characterized in that: The quick connector female head (1) comprises a female head body (3), the female head body (3) being provided with a coaxial joint end (301) and a socket end (302), a slider (6) being provided in the middle of the tube wall of the socket end (302), a rotating ring (4) being sleeved on the outer ring of the socket end (302), the rotating ring (4) being elastically axially slidably connected to the socket end (302), and the rotating ring (4) can push the slider (6) to move radially toward the inside of the socket end (302) when sliding, and make the slider (6) protrude from the socket end (302). 02) inner wall, one end of the socket end (302) close to the joint end (301) is fixedly provided with a screw (9) for an axial limiting rotating ring (4), the other end of the socket end (302) is fixedly provided with a dust cover (8), the inner bottom of the socket end (302) is provided with a sealing ring (7), the male head (2) of the quick connector is provided with an annular groove (203), and after the male head (2) of the quick connector is inserted into the socket end (302), it is sealed with the female head body (3) through the sealing ring (7) and the slider (6) is clamped in the annular groove (203).

2. A quick self-locking connector according to claim 1, characterized in that: The outward end of the bell end (302) is provided with a dust cover groove (306), the end of the bell end (302) close to the joint end (301) is radially symmetrically fixed with a boss (303), the boss (303) is provided with a screw hole (304), and the middle part of the pipe wall of the bell end (302) is provided with a tapered hole (305) radially.

3. A quick self-locking connector according to claim 2, characterized in that: The sliding block (6) is conical and matches the tapered hole (305); the tapered head of the sliding block (6) is an arc surface.

4. A quick self-locking connector according to claim 2, characterized in that: A retaining ring (401) is fixedly arranged in the middle of the inner wall of the rotating ring (4); one end of the retaining ring (401) is connected to the inner wall of the rotating ring (4) through a vertical surface (402), and the other end is connected to the inner wall of the rotating ring (4) through a conical surface (403); a spring (5) is arranged between the socket end (302) and the rotating ring (4); one end of the spring (5) is attached to the boss (303), and the other end is attached to the vertical surface (402).

5. A quick self-locking connector according to claim 1, characterized in that: A symmetrical open waist-shaped groove (404) is formed at one end of the rotating ring (4) close to the screw (9), and the groove width of the open waist-shaped groove (404) matches the diameter of the screw (9).

6. A quick self-locking connector according to claim 1, characterized in that: One end of the quick connector male head (2) is a cone head end (201), and the other end is an internal thread end (202). An annular groove (203) is provided in the middle of the quick connector male head (2), and the cross section of the annular groove (203) is in the shape of an arc.

7. A quick self-locking connector according to claim 1, characterized in that: The sealing ring (7) is in the shape of a cover, a sealing lip (701) inclined inwardly is provided on the top of the sealing ring (7), a fluid cavity (702) is formed between the sealing lip (701) and the main body of the sealing ring (7), and a serrated buffer layer (703) is provided on the bottom of the sealing ring (7).

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